It is easy to subtract fractions by converting them into decimals first. To convert is numerator divided by denominator. So, 10 1/2 would be 10.5 and 8 3/4 would be 8. 75. Now, you can subtract them. Start at the hundredth place so subtract 5 from 0 ( because 10.5 can also be 10.50) so it would be 5. Next, 5 -7 ( so you borrow 1 from 10 so 5 would become 15 and 10 is 9) is 7. Last, subtract your whole number. 9 - 8 = 1. So, your answer would be 1. 75. To convert it to fraction, you need to write it as 1 75/ 100 and simplify it which is 1 3/4. So, Carla's plant is 1 3/4 inches taller than Yolanda's plant Hope it helps!!!!
For a right triangle, the sine of an angle is the ratio of the length of the side opposite to it and the hypotenuse and the its cosine is the ratio between the side adjacent to it and the hypotenuse. From the given choices, the angle being referred to is letter B. 45°.